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Offshore Marine Forecast


000

FZNT24 KNHC 180132

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

932 PM EDT Thu Sep 17 2026



Offshore Waters Forecast for the Gulf of America



Seas given as significant wave height, which is the average

height of the highest 1/3 of the waves. Individual waves may be

more than twice the significant wave height.



GMZ001-181345-

Synopsis for the Gulf of America

932 PM EDT Thu Sep 17 2026



.SYNOPSIS...The pressure gradient between high pressure over the

southeastern U.S. and a weakening frontal trough over the SE Gulf

supports fresh NE to E winds and moderate seas over the NE and 

north-central Gulf. These marine conditions will spread westward 

over the remainder of the northern Gulf waters through tonight 

before improving Fri into Sat. Meanwhile, a rather broad upper- 

level low will move towards Florida from the western Atlantic on 

Fri, and into the NE Gulf on Sat. This feature will lead to 

increasing shower and thunderstorm activity over Florida, and then

over the eastern and central Gulf waters. Fairly tranquil marine

conditions are forecast by the end of the weekend into early next

week.



$$



GMZ040-181345-

NW Gulf of America including Stetson Bank-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...E winds 10 to 15 kt S of 27N, and E 15 to 20 kt N of

27N. Seas 4 to 6 ft. Scattered showers and isolated tstms. 

.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. 

.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT...E winds 10 kt. Seas 3 to 5 ft. 

.SAT NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. 

.SUN...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...Variable winds less than 5 kt, becoming E to SE

10 kt in the late evening and early morning. Seas 3 ft or less. 

.MON...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...Variable winds less than 5 kt, becoming E 10 kt in

the late evening and early morning. Seas 3 ft or less. 

.TUE...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. 



$$



GMZ041-181345-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft. 

.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. 

.FRI NIGHT...E winds 15 kt. Seas 4 to 6 ft. 

.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. 

.SUN...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...E winds 10 kt. Seas 3 ft or less. 

.MON...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...Variable winds less than 5 kt, becoming E 10 kt in

the late evening and early morning. Seas 3 ft or less. 

.TUE...E to SE winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.TUE NIGHT...NE to E winds 10 to 15 kt. Seas 3 ft or less. 



$$



GMZ056-181345-

N Central Gulf of America Offshore Waters-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...NE to E winds 15 to 20 kt. Seas 5 to 7 ft. 

.FRI...E winds 15 kt. Seas 5 to 7 ft in E swell. 

.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. 

.SAT...E winds 10 kt. Seas 3 to 5 ft. 

.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. 

.SUN...E to SE winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...NE to E winds 10 kt. Seas 3 ft or less. 

.MON...E winds 10 kt early in the morning, becoming variable less

than 5 kt. Seas 3 ft or less. 

.MON NIGHT...Variable winds less than 5 kt, becoming E 10 kt in

the late evening and early morning. Seas 3 ft or less. 

.TUE...E to SE winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.TUE NIGHT...E winds 10 kt. Seas 3 ft or less. 



$$



GMZ057-181345-

NE Gulf of America N of 26N E of 87W-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...NE to E winds 15 to 20 kt. Seas 4 to 6 ft. 

.FRI...NE to E winds 15 kt. Seas 4 to 6 ft. 

.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT...NE to E winds 10 kt. Seas 2 to 4 ft. 

.SAT NIGHT...NE winds 10 kt. Seas 3 ft or less. 

.SUN...E winds 10 kt early in the morning, becoming variable less

than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...Variable winds less than 5 kt. Seas 3 ft or less.

.MON...Variable winds less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...Variable winds less than 5 kt. Seas 3 ft or less.

.TUE...Variable winds less than 5 kt. Seas 3 ft or less. 

.TUE NIGHT...Variable winds less than 5 kt, becoming NE to E

10 kt in the late evening and early morning. Seas 3 ft or less. 



$$



GMZ058-181345-

W Central Gulf of America from 22N to 26N W of 94W-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...NE to E winds 10 kt. Seas 3 to 5 ft. Scattered

showers and isolated tstms. 

.FRI...W of 96W, E winds 10 kt early in the morning, becoming

variable less than 5 kt. E of 96W, NE to E winds 10 kt. Seas 3 to

5 ft. Scattered showers and isolated tstms. 

.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT...E winds 10 kt early in the morning, becoming variable less

than 5 kt. Seas 3 to 5 ft in NE to E swell. 

.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. 

.SUN...SE to S winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...Variable winds less than 5 kt, becoming E to SE

10 kt in the late evening and early morning. Seas 3 ft or less. 

.MON...SE winds 10 kt. Seas 3 ft or less. 

.MON NIGHT...W of 96W, E to SE winds 10 kt. E of 96W, variable

winds less than 5 kt, becoming NE to E 10 kt in the late evening

and early morning. Seas 3 ft or less. 

.TUE...E to SE winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. 



$$



GMZ045-181345-

W Central Gulf of America from 22N to 26N between 91W and 94W-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...NE to E winds 10 kt S of 24N, and NE to E 15 to

20 kt N of 24N. Seas 4 to 6 ft in NE to E swell. Scattered

showers and isolated tstms. 

.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. Scattered showers and

isolated tstms. 

.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. Scattered

showers and isolated tstms. 

.SAT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. Scattered

showers and isolated tstms. 

.SAT NIGHT...S of 24N, variable winds less than 5 kt, becoming NE

10 kt in the late evening and early morning. N of 24N, E winds

10 kt. Seas 2 to 4 ft. 

.SUN...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...Variable winds less than 5 kt, becoming NE to E

10 kt in the late evening and early morning. Seas 3 ft or less. 

.MON...E winds 10 kt early in the morning, becoming variable less

than 5 kt. Seas 3 ft or less. 

.MON NIGHT...S of 24N, variable winds less than 5 kt, becoming NE

10 kt in the late evening and early morning. N of 24N, NE to E

winds 10 kt. Seas 3 ft or less. 

.TUE...E winds 10 kt early in the morning, becoming variable less

than 5 kt. Seas 3 ft or less. 

.TUE NIGHT...S of 24N, variable winds less than 5 kt, becoming NE

to E 10 kt in the late evening and early morning. N of 24N, NE to

E winds 10 to 15 kt. Seas 3 ft or less. 



$$



GMZ046-181345-

Central Gulf of America from 22N to 26N between 87W and 91W-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...NE to E winds 15 to 20 kt. Seas 4 to 6 ft. Scattered

showers and isolated tstms. 

.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. Scattered showers and

isolated tstms. 

.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. Scattered

showers and isolated tstms. 

.SAT...E to SE winds 10 kt. Seas 2 to 4 ft. 

.SAT NIGHT...S of 24N, variable winds less than 5 kt, becoming NE

to E 10 kt in the late evening and early morning. N of 24N, E

winds 10 kt. Seas 3 ft or less. 

.SUN...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...S of 24N, variable winds less than 5 kt, becoming NE

to E 10 kt in the late evening and early morning. N of 24N, NE to

E winds 10 kt. Seas 3 ft or less. 

.MON...E to SE winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...Variable winds less than 5 kt, becoming NE to E

10 kt in the late evening and early morning. Seas 3 ft or less. 

.TUE...E to SE winds 10 kt. Seas 3 ft or less. 

.TUE NIGHT...E winds 10 kt. Seas 3 ft or less. 



$$



GMZ047-181345-

SE Gulf of America from 22N to 26N E of 87W including Straits of

Florida-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. Scattered

showers and isolated tstms. 

.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. Scattered showers and

isolated tstms. 

.FRI NIGHT...NE to E winds 10 kt. Seas 3 to 5 ft. Scattered

showers and isolated tstms. 

.SAT...S of 24N, E winds 10 kt early in the morning, becoming

variable less than 5 kt. N of 24N, E winds 10 kt. Seas 2 to 4 ft.

Scattered showers and isolated tstms. 

.SAT NIGHT...S of 24N, variable winds less than 5 kt, becoming NE

to E 10 kt in the late evening and early morning. N of 24N, NE to

E winds 10 kt. Seas 3 ft or less. 

.SUN...Variable winds less than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...Variable winds less than 5 kt. Seas 3 ft or less.

.MON...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...Variable winds less than 5 kt. Seas 3 ft or less.

.TUE...SE winds 10 kt. Seas 3 ft or less. 

.TUE NIGHT...Variable winds less than 5 kt, becoming NE to E

10 to 15 kt in the late evening and early morning. Seas 3 ft or

less. 



$$



GMZ048-181345-

SW Gulf of America S of 22N W of 94W-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...N to NE winds 10 to 15 kt. Seas 2 to 4 ft. Scattered

showers and isolated tstms. 

.FRI...N winds 10 kt. Seas 3 ft or less. 

.FRI NIGHT...N winds 10 kt. Seas 3 ft or less. 

.SAT...S of 21N W of 95W, variable winds less than 5 kt, becoming

NW 10 kt in the late morning and early afternoon. Elsewhere,

variable winds less than 5 kt. Seas 3 ft or less. 

.SAT NIGHT...N winds 10 kt early in the evening, becoming

variable less than 5 kt. Seas 3 ft or less. 

.SUN...Variable winds less than 5 kt. Seas 3 ft or less in NE

swell, subsiding to 3 ft or less in the late morning and early

afternoon. 

.SUN NIGHT...Variable winds less than 5 kt, becoming E 10 kt in

the late evening and early morning. Seas 3 ft or less. 

.MON...E to SE winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...Variable winds less than 5 kt, becoming NE to E

10 kt in the late evening and early morning. Seas 3 ft or less. 

.TUE...S of 21N W of 95W, E winds 10 kt early in the morning,

becoming variable less than 5 kt. Elsewhere, E winds 10 kt. Seas

3 ft or less. 

.TUE NIGHT...Variable winds less than 5 kt, becoming NE to E

10 kt in the late evening and early morning. Seas 3 ft or less. 



$$



GMZ049-181345-

Central Bay of Campeche-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...N to NE winds 10 to 15 kt. Seas 3 ft or less.

Scattered showers and isolated tstms. 

.FRI...NE to E winds 10 kt. Seas 3 ft or less. Scattered showers

and isolated tstms. 

.FRI NIGHT...S of 20N, N winds 10 to 15 kt. N of 20N, variable

winds less than 5 kt, becoming N 10 kt in the late evening and

early morning. Seas 3 ft or less. Scattered showers and isolated

tstms. 

.SAT...E winds 10 kt early in the morning, becoming variable less

than 5 kt. Seas 3 ft or less. 

.SAT NIGHT...N winds 10 kt S of 20N, and variable less than 5 kt

N of 20N. Seas 3 ft or less in NE swell, subsiding to 3 ft or

less in the late evening and early morning. 

.SUN...S of 20N, variable winds less than 5 kt early in the

morning. Variable winds less than 5 kt in the late morning and

early afternoon. N of 20N, E to SE winds 10 kt early in the

morning. Seas 3 ft or less. 

.SUN NIGHT...Variable winds less than 5 kt, becoming N to NE

10 kt in the late evening and early morning. Seas 3 ft or less. 

.MON...NE to E winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...Variable winds less than 5 kt, becoming N to NE

10 kt in the late evening and early morning. Seas 3 ft or less. 

.TUE...E winds 10 kt. Seas 3 ft or less. 

.TUE NIGHT...Variable winds less than 5 kt, becoming N to NE

10 to 15 kt in the late evening and early morning. Seas 3 ft or

less. 



$$



GMZ050-181345-

E Bay of Campeche including Campeche Bank-

932 PM EDT Thu Sep 17 2026



.OVERNIGHT...NE winds 10 to 15 kt. Seas 3 ft or less. Scattered

showers and isolated tstms. 

.FRI...W of 90W, E to SE winds 10 kt. E of 90W, E to SE winds

10 kt early in the morning, becoming variable less than 5 kt.

Seas 3 ft or less. 

.FRI NIGHT...N to NE winds 10 to 15 kt. Seas 3 ft or less. 

.SAT...E to SE winds 10 kt early in the morning, becoming

variable less than 5 kt. Seas 3 ft or less. 

.SAT NIGHT...NW to N winds 10 kt, shifting to NE in the late

evening and early morning. Seas 3 ft or less. 

.SUN...SE winds 10 kt early in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. 

.SUN NIGHT...N to NE winds 10 kt. Seas 3 ft or less. 

.MON...SE winds 10 kt. Seas 3 ft or less. 

.MON NIGHT...N winds 10 kt. Seas 3 ft or less. 

.TUE...E to SE winds 10 kt. Seas 3 ft or less. 

.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 ft or less. 



$$



Forecaster Lewitsky
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